Early and recent intraluminal ultrasound devices

Bom, N.; Hoff, H. ten; Lancée, C.T.; Gussenhoven, W. J.; Bosch, Johan G.

doi:10.1007/bf01745137

Cited by 122 publications

(16 citation statements)

References 15 publications

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“…The 0.40 difference was defined because it reflects the variation inherent to the quantitative angiography system used (CMS). Furthermore, previous studies carried out by our group showed that errors of this magnitude may have clinical implications and also that this has been the mean intraobserver variability of the tomography used 2,8,10 . P values < 0.05 were, therefore, considered statistically significant.…”

Section: Original Articlementioning

confidence: 83%

“…Early studies documented the effectiveness of noninvasive examination for evaluating CAD patients, but its performance in the presence of coronary stents is yet to be determined [8][9][10][11][12] . Recent studies using multidetector technology equipped with 40 to 64 detectors still reported limitations in the diagnosis of in-stent restenosis, the results of which varied according to the type of prosthesis studied 13,14 .…”

mentioning

confidence: 99%

“…On the other hand, the presence of neointimal hyperplasia may represent a complicating factor for analysis of coronary stents late results by means of computed tomography. The difficulties in assessing the stents by means of CT may be due to the interaction between metallic struts and X-rays or the existence of neointimal tissue within the stents, or both [8][9][10][11][12] .…”

mentioning

confidence: 99%

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Avaliação tardia de endopróteses coronarianas com sirolimus: comparação da tomografia computadorizada por múltiplos detectores com a angiografia quantitativa e o ultra-som intracoronariano

Pinto¹,

Sousa²,

Ishikama³

et al. 2006

Arq. Bras. Cardiol.

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objective: To assess the performance of multidetector computed tomography in determining late clinical outcomes of patients undergoing sirolimus-eluting stent implantation.Methods: Thirty patients, successfully submitted to sirolimus-eluting stent implantation for more than six months, were selected to participate in the study. All underwent invasive angiography and intravascular ultrasound following CT angiography using iodinated contrast medium at a dose of 1.5 ml/kg. Results:Mean proximal reference diameter was 3.01 ± 0.31 mm by tomography and 3.14 ± 0.31 mm by angiography (p = 0.04). When the left circumflex artery was excluded from the analysis, the difference between both examinations was no longer significant (tomography = 3.01 ± 0.32 mm; angiography = 3.10 ± 0.30 mm, p = 0.65). Mean distal reference diameter was 2.86 ± 0.30 mm by tomography and 2.92 ± 0.32 by angiography (p = 0.25). Mean in-stent minimal lumen diameter was 2.85 ± 0.25 mm by tomography and 2.85 ± 0.29 mm by angiography (p = 0.27). Mean minimal in-stent crosssectional area was 7.19 ± 1.47 mm 2 by tomography and 6.90 ± 1.52 mm 2 by intravascular ultrasound (p = 0.36), but there was only a weak correlation between these measurements (r = 0.33). Conclusion:Computed tomography allows the qualitative assessment of sirolimus-eluting stents, accurate estimate of proximal and distal reference diameters of the target vessel, and in-stent minimal lumen diameter. Its correlation with measurements performed using intravascular ultrasound, however, is less strong. key words: Coronary failure, computed tomography, quantitative angiography, intravascular ultrasound.

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Section: Original Articlementioning

confidence: 83%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Avaliação tardia de endopróteses coronarianas com sirolimus: comparação da tomografia computadorizada por múltiplos detectores com a angiografia quantitativa e o ultra-som intracoronariano

Pinto¹,

Sousa²,

Ishikama³

et al. 2006

Arq. Bras. Cardiol.

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“…A 30-MHz mechanical IVUS imaging system was used with 4.3F catheters ("Princeps", EndoSonics). 8 The IVUS catheter was positioned distally from the stenosis in the first major side branch. Real-time cross-sectional images of the renal artery wall obtained during slow pullback of the IVUS catheter were displayed on a monitor and stored on S-VHS videotape for off-line analysis.…”

Section: Methodsmentioning

confidence: 99%

Intravascular Ultrasound Evidence for Coarctation Causing Symptomatic Renal Artery Stenosis

et al. 1999

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Background-A recent study of human cadaveric renal arteries revealed that renal artery narrowing could be due not only to atherosclerotic plaque compensated for by adaptive remodeling, but also to hitherto undescribed focal narrowing of an otherwise normal renal arterial wall (ie, coarctation). The present study investigated whether vessel coarctation could be identified in patients with symptomatic renal artery stenosis (RAS). Methods and Results-Consecutive symptomatic patients with angiographically proven atherosclerotic RAS who were referred for stent placement were studied by 30-MHz intravascular ultrasound before intervention (nϭ18) or after predilatation (nϭ18). Analysis included assessment of the media-bounded area and plaque area (PLA) at the most stenotic site and at a distal reference site (most distal cross-section in the main renal artery with normal appearance).Coarctation was considered present whenever the target/reference media-bounded area was Յ85%. Before intervention, coarctation was observed in 9 of 18 patients and adaptive remodeling in 9 of 18 patients. Coarctation lesions had a significantly smaller PLA than adaptive remodeled lesions (Pϭ0.001). Similarly, despite predilatation, coarctation was seen in 8 of 18 patients who had significantly smaller PLAs (Pϭ0.008) when compared with those patients who had adaptive remodeled lesions. No differences in severity of RAS or angiographic or clinical parameters were observed. Conclusions-Low-plaque coarctation may cause a considerable proportion of symptomatic RAS, which is angiographically and clinically indistinguishable from plaque-rich RAS. (Circulation. 1999;99:2976-2978.)

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“…был разработан механиче-ский вращающийся 4-элементный ультразвуко-вой датчик, а в 1969 году N.Bom и соавт. в Рот-тердаме разработал фазированный датчик с 32 элементами [4,5,6]. Эта разработка предше-ствовала развитию методов лечения при помо-щи катетерных технологий.…”

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The Role of Intracardiac Echocardiography in Mordern Electrophysiological Laboratory

Vasjukov¹,

Kuzmenkov²

2016

Rejr

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Early and recent intraluminal ultrasound devices

Cited by 122 publications

References 15 publications

Avaliação tardia de endopróteses coronarianas com sirolimus: comparação da tomografia computadorizada por múltiplos detectores com a angiografia quantitativa e o ultra-som intracoronariano

Avaliação tardia de endopróteses coronarianas com sirolimus: comparação da tomografia computadorizada por múltiplos detectores com a angiografia quantitativa e o ultra-som intracoronariano

Intravascular Ultrasound Evidence for Coarctation Causing Symptomatic Renal Artery Stenosis

The Role of Intracardiac Echocardiography in Mordern Electrophysiological Laboratory

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